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(Populus tremuloides) / Crataegus douglasii / Heracleum maximum Shrubland | Western Ecology Working Group of...
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Name: (Populus tremuloides) / Crataegus douglasii / Heracleum maximum Shrubland Reference: Western Ecology Working Group of... Description: This shrubland association of the Columbia Basin grows on relatively moist sites on deep soils within flat valleys between 400-750 m of elevation. Winters are cool and receive the bulk of the area's 50 cm of annual precipitation. Summers are warm to hot with very little precipitation. The canopy is dominated by Crataegus douglasii between 5-7 m in height. Intermittently the overstory is locally dominated by Populus tremuloides. The understory is dominated by forbs, including Heracleum maximum, Hydrophyllum fendleri, and Urtica dioica. The remainder of the herbaceous layer is relatively depauperate due to the extreme shading of the Heracleum maximum.  Accession Code: VB.CC.27276.POPULUSTREMULOI Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 17-Nov-2014
	status: accepted Community's Parent: Crataegus douglasii Intermittently Flooded Shrubland Alliance This Community's Level: Association This Community's Children: [none]		Names:   Translated: (Quaking Aspen) / Black Hawthorn / Cow-parsnip Shrubland   UID: ELEMENT_GLOBAL.2.689115 NatureServe Explorer   Scientific: (Populus tremuloides) / Crataegus douglasii / Heracleum maximum Shrubland   Code: CEGL001094 (convergence) and Synonyms: (undetermined) (Populus tremuloides) / Crataegus douglasii / Heracleum maximum Shrubland